Equivalents for the ACDelco spark plug R 6604
ACDelco R 6604, a spark plug. Browse its 40 equivalents: compatible, interchangeable and replacement spark plugs across NGK, Bosch, Champion, Denso and many more.
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40 equivalents compatible with the ACDelco R 6604 spark plug
No equivalent for this brand selection.
What can replace a ACDelco R 6604 spark plug?
The ACDelco R 6604 is interchangeable with: NGK BCPR6ET, Bosch W 8 DTC, Champion RL 82 YC, NGK BKR6ETUC, NGK BR 8 HSA, NGK BU 5 EB-11. These spark plugs share the same mounting (thread, seat) and heat range.
Cross-references and specifications are provided for guidance only. The wrench size can vary by brand, and some data is inferred from the plug code or an equivalent reference. Always check the vehicle manufacturer's recommendation before buying and fitting.